U.S. Fish and Wildlife Service
Back to Freshwater Mussels of the Upper Mississippi River System home page.Freshwater Mussels of the Upper Mississippi River System Link to USGS home page.
apple.gif Teachers Resources - Mussel Market Mystery
Table 3. Two species comparison.

Year

1000's pounds of Threeridge Harvested

$/pound of Threeridge

1000's pounds of Washboard Harvested

$/pound of Washboard

1986

168

0.05

802

0.20

1987

55

0.10

563

0.20

1988

56

0.25

862

0.20

1989

575

0.25

516

0.42

1990

1063

0.23

272

1.20

1991

259

0.20

287

1.20

1992

567

0.40

69

1.01

1993

377

0.47

67

1.45

1994

652

0.57

81

1.78

1995

685

1.40

112

2.50

1996

459

0.50

90

1.95

1997

104

0.75

13

2.00


Species Identification and LocationThreatened and Endangered MusselsLife HistoryEcology Mussel Harvest on the RiverCurrent ThreatsMussel Conservation ActivitiesOngoing Studies and ProjectsMultimediaTeacher ResourcesFrequently Asked QuestionsGlossaryReferencesLinks to Other Mussel Sites

Privacy
FOIAFirstGovContact

Department of the InteriorU.S. Fish & Wildlife ServiceU.S. Geological Survey
Last updated on October 16, 2003
http://www.fws.gov/midwest/mussel/market_mystery_table3.html